Test tube holder



FIG. 1 is a perspective view of the test tube holder showing our new design.

FIG. 2 is a left side view of the test tube holder of FIG. 1

FIG. 3 is a right side view of the test tube holder of FIG. 1.

FIG. 4 is a rear view of the test tube holder of FIG. 1.

FIG. 5 is a top plan view of the test tube holder of FIG. 1; and,

FIG. 6 is a perspective view from underneath of the test tube holder of FIG. 1.

The broken lines are included for the purpose of illustrating unclaimed portions of the test tube holder and form no part of the claimed design. 

CLAIM The ornamental design for a test tube holder, as shown and described. 